Cock or valve.



W. HJWAKPER.

COCK 0R VALVE.

nrmouron FILED nov. 2.1908.

Patented Mar. 2, 14909.

2 SHEETS-SHEET 1.

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" W. H. WAKFER.

000K 0B VALVE.

' rrLIoATIoN Hum nov.2,1aoe.

patented Mar. 2, 1909.l

2 SHEETS-SHEET 2.

Inventor.

'lll/le I WILLIAM HENRY WAKFIER, OF NO RWOOD, ENGLAND.

' cocx on VALVE! ASpecification. of Letters Patent. I I Iatented 2, 1'909.

Application led November 2, 1908. Serial No. 841,748.

To all whom 'it may concern.:

Be it known that I, WILLIAM HENRY WA-KFER, a subject of the King of Great Britain,.'residing at No. 67 Whitworth road, Norwood, in the county of Surre En land, have invented an Improved Coc or alve7 of which the followin is a specification.

Thisinvention re ates to an im roved cock or valve of the type consisting o a Acasing having a taper bore or seating within which bore is mounted a taper plug not' quite reaching to the bottom of the casing..

In order to enable the invention to be readily understood reference is made to the accompanying drawings in which Figure 1 is a-side elevation of a cock made according to. this invention. Fig. 2 is an end elevation and Fig. 3 is a longitudinal 'section thereof. Fig. 2i is a plan view showing gripping faces on -the casmg. Fig. 5 is a section of a fragment of the casing showlng a grippingface in the seating. Fig. -6 is a similar view of a hot water tap or cock also constructed :according to this invention. Fig. 7is a transverse section of a modification. Fig. 8 is a section lof a tw`o way cock the section bein .taken on -a plane at right angles to the ams of the taper plug. Fig. 9 plan section of. another two way cock whic is particularly suitable for baths to be supplied withho't and cold\water. Fi 10 is a sectional view on the lihe 8;-81' Iig. 7 and lFigs. 11, 12 and 13 are-similar views of other modifications and Fig. 14 is an im verted plan view of a cap formed with a grippir face.

. eferringto Figs. 1, 2 and 3-the lower end of theplu a, best seen in Fig. 3, 1s made with a sh' low cylindrical recess b and provided -witha coiled s rin A c which constantly tendsto raise t e p ug a vertically and out of contact with the 1 nner sides of, the

` casing d. The casing d is rovided with ar screwed ca e, having a ho e in the m'i'ddle through w 'ch the valve stem f passes, the

` upper end of said stem being made square or otherwise fashioned for receiving a key or handle g by which the valve is turned to the o en and closed positions. The up er end o the valve casing is suitably provi ed with an external screw thread adapted to receive the screw cap e which is rovided with a corresponding internal thread), and in order to make a tight joint between'the screwed cap alla the casin d a washer h of india rubber is provided o such an internal diameter as to more or less fit the stem f ofthe plug .and of such an external diameteras to rest.

on the topv or barrel of the casing. `In order to prevent the screwed cap froml coming unscrewed by any shock or concussion or from being screwed up too tightly or unscrewed by reason for instance of any friction which may exist between the stem ofy the plug and the hole in the screwed cap through which the stem of the plug passes, f

the upper edge or face 'i of the top or barrel of the casing 1s milled or provided with small projections or with serrations or recesses as shown in Fig. 4 which bite into the india rubber washer and are thus adapted to lock the screwed cap so as to revent it from being turned unintentional y or the serrations or gripping face may be formed on the cap as seen in Fig. 14, and the adjoining surface at 7c inside the barrel may also be milled or similarly fashioned if desired as shown in Fig. 5. The upper end or flat surface of the plug is provided with a packing Z of asbestos or other suitable materlal so as to make a tight joint between the outer. circumferenceI e casing, the single shown 1n Fig.` 6I and er edve of the casingA marked o of a section corresponding to the combined sections of .the washers h and m. This washer o or these washers k and m (see Fig. 3) `may be made of ordinary rubber or rtly of india rubber and partly of fabrlc.

a ll`he' said washer or washers or thelr equlva'- lent or e uivalents is or are intended to full a dou le urpose, namely t'o provide packing material and a yielding resistance or spring to the upward movement of the plug as aforesaid.

The screw cap e is suitably made with eX- l i ternal means such as'milled edges (two s uch milled edges being shown 1n the constructlons illustrate by Figs. 3 and 4) so as to permit -of its being screwed down and adjusted by hand.- If desired and in -caseswherecocls v are exposed to violent usage, the casing 1s lsuitably strengthened on each side as aforesaid by ribbing n (higs. 1 and 2) whereby equal strength as compared with a thicker casing, generally is obtained, 'while-eiiecting a sav1ng in the amount of metal used.

According to a modification and as shown in Iiig. 7 the base or larger diameter of the plug p may be at the bottom and that end of the barrel of casing g is then provided with the .screwedV cap r or the like, and the space'. between the mterior surface of the cap and the base ofthe plug is occupied by the packlike.

ing s and indiau rubber disks t and lu. or the The upper part of the plug is reduced in diameter to form astem v and is surrounded by a s ring w or by a packing and a spring and t at part of the stem which passes through the casing is provided with a square :the oil ispouredinto fthe branch and fills the hollowplug more or less as re uired... Then a partial turn of the plugto t e left, closes.

the inlet opens the passage for the steam from 'y by way of z to the motor and the oil is passed in with the steam to lubricate the piston and valve or valves. In vconnection with rock drills which have to stand a large Vamountof rough'usage the branches az, y andl z may all be scr wed, so that ifethe thread of one branch or t e branch itself is damaged that one may beused for lubrication purposes and the other two for the inlet and outlet ofthe motive iiuid.

A cock of this ,description is also applicable to baths for hot and cold water but prefer- .v ably a hot and cold water cock for baths is made as shown in Figs. 9 and -10 in which there are two inlets 1 and 2 at the side and one outlet 3, say at the bottom of the plug.

The ports-4 and 5 in the plug are so arranged that the lug may 4shut oii the supply from either et entirely, or nl one inlet may be open, while the other is s ut or bo'th may Y be fully-*open as shown or they may be more for less open. yThe said orts 4 and 5 are of diiierent sizes4 so that eit er the total area of A j which lcase onl f cold water wi .gw

fthe inlets 1 and 2 may be open as is the case in 9 or the plug may be 'ven a half turn tillFiie port 5 re ters withgiixlets 1 and 2 in alf,` the amount o het and pass'. In the resent 'casethe outlet is formed in one wit a screwed cap 6 which screws on the casing ,7 and makes .a tightioint` by means of a washer 9. Fur-` ther th'e outlet 3 isgroovejd externally so' 'that a-ilexible -tfbe withla rose or spray may formed with s f pac classi be put on same, for giving a shower bath, douche or the like.

According to another modification asshown in Fig. 11 the plug 10 is made hollow and the inlet is at the bottom while the outlet port is at the side and in this case, where the pressure o'f the liquid always tends to raise the plug the packing and the resilient Washer or washers may be at the to of the plug as firstly described. Or as s own ig. 12 the inlet may be at the side and thetion and waste as well as loss of power thro h leakage. Besides these .advantages the e ect of theindia rubber disk or washer exerting a pressure on the plug prevents the latter from turning by vibration or concussion, which in the case of rock drills and other machinery often occurs if ordinary plu taps or valves are employed.

T e mventionis not limited tothe constructions shown but embraces equivalents thereof the scope being clearly denedby the claims.

What I claim as my invention, and desire to s ecure by Letters Patent is 1. In a plug cock, the combination with a tapering casingmpen at the wider end and ow milling serrations and threaded externally at said end', an internall'7 threaded cap ada ted to screw on to said n a tapering plug aving a stem at-one end formlng an annular shoulder, a packing com? posed chiefly of rubber ha an inner portion occupyinglthe spacewlilillin the cas' and between-t e plug and the screw cap an an outer portion of a diameter approximatin the internal diameter of the screw ca as estos acking ybetween said elastic pac ing and t e plug and means for pressing said cap u on the casing whereby the outer portion o the elastic packin is nipped between the cap and the wider en surface of the casing effecting a tight joint between these parts and the remain er of the packing is forced into the casing against one end of the plug so las to make a tight resilient joint between the plu and the casing and whereby'said elastic 1 lking is prevented from rotating with the ug. p- 2. In a plug cock, the combination with a .tapering casing o en. at the wider end and formed with sha ow milling serrations and threaded externally 'at said end; an internall threaded cap adapted to screw onto said en massi a tapering plug havingl a stem at one end forming an annular shoulder, a packing composed chiefly of rubber having an inner por- -tion occupying the space between the stem of the plug and the casing and an outer portion of a diameter approximating the internal diameter of the screw cap, asbestos packing between said elastic packing and the plug,

- andI 'means for pressing said cap upon the .remainder of the packing is forced into the casing against the shoulder and spindle of the plug so as to'make a tight resilient joint between the plug and the casing wherebyT said elastic' packing is prevented from rotating with the plug.

3. In a plug cock, the combination with-a tapering casin open at the wider end and formed with s allow milling -serrations and threaded externally at said end, an internally threaded cap ada ted to screw onto said end, a tapering plug aving a stem at one end forming an annular shoulder, a packing composed chiefly of rubber having an inner portion occupying the space between the stem of the plug and the casingand an outer portion of a diameter approximating the internal diameter of the screw cap, asbestos packing between said elastic packing and the plug, means for pressing said cap upon the casing lwhereby the outer portion of the elastic packing is nipped between the cap and the Wider end surface of the casing effecting a tight joint between these parts and the remainder of the packing is forced into the casing against the shoulder and spindle of the plug so as to make a tight resilient joint between the plug and the casing and whereby said elastic packing is prevented from rotating with the plug,

and a spring adapted to force the plug against the packing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM HENRY WAKFER.

' Witnesses:

V. "JENSEN, H. D. JAMESON. 

